6 Answers
6

Once application exit or destroy that will remove all data . if you want to access after relaunch you should save your data as per your requirement . like local or web. its deepen you. right now you can store data in preference so it will useful after relaunch the application.
I think this is better for you : How to use SharedPreferences in Android to store, fetch and edit values

Each Android app is running in a dependent process. When an app become background and system need memory, the app's process may be killed by system. In this situation, when app relaunch, static objects will lost.